Abstract:The design of extrusion die has been investigated by autofrettage technique considering the characteristics of the extrusion die. Ideal elastoplastic autofrettage model was established and the stress formulae of three loading procedures were derived and the theoretical calculation method of the maximum autofrettage pressure and working load was put forward. The simulations of stress distribution and the inwall displacement of the autofrettaged extrusion die were performed using MARC finite element software, an… Show more
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